Source Tracking from Extraction to Wordfly to Donate2

Hi.

I am working in Wordfly to deploy emails that drive transactions on Donate2.

My list extractions can have 50+ different sources within Tess. 

Once I promote the extraction, Tessitura overwrites the original sources.

Any tips for how I can track engagement—i.e. opens, clicks, and ultimately transactions on Donate2—back to the original sources used when the extraction was created?

Thanks!